Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2019 8 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/26/2019   09:44:05   (   0.37,-128.41) (  -0.58,-124.17)  484.16                80
 08/27/2019   22:05:45   (  -0.38,-128.39) (  -0.58,-129.41)  115.12                80
 08/28/2019   21:49:29   (  -0.37,-128.39) (   0.42,-124.83)  404.99                80
 08/30/2019   10:11:02   (   0.38,-128.38) (   0.73,-130.04)  189.06                80
 08/31/2019   09:49:26   (   0.37,-128.37) (  -0.27,-125.46)  330.48                80
 09/01/2019   22:11:06   (  -0.37,-128.34) (  -0.90,-130.71)  270.14                80
 09/02/2019   21:54:51   (  -0.37,-128.32) (   0.10,-126.13)  249.75                80
 09/04/2019   10:16:23   (   0.37,-128.32) (   1.04,-131.34)  344.14                80
 09/05/2019   09:54:48   (   0.37,-128.30) (   0.04,-126.76)  175.01                80
 09/06/2019   22:16:28   (  -0.37,-128.26) (  -1.21,-132.01)  427.42                80
 09/07/2019   22:00:14   (  -0.36,-128.24) (  -0.16,-127.44)   91.89                80